I found Rainbow Light's "Complete Prenatal System" at my local coop when DH and I decided to try to conceive. I have been taking it for over three years now, and really like it. (I took it for a complete year before conceiving, and once pregnant kept taking it through nursing, and am now due with our second child.) I plan on continuing with this vitamin until we believe our child blessings are ended, and am no longer nursing. Then I will look for an alternative multi-vitamin. I don't believe this one is organic though, but I liked the idea of the extra ingredianets of spirulina, wheat grass, red raspberry leaf and ginger.
I found this prenatal recently in the vitamin shoppe catalog - and though I don't really like not supporting my local coop, financially, I have to go with what is less expensive in order to remain a mostly stay-at-home mom.
This prenatal comes in a one month or two month supply bottle. I can't remember the exact pricing, but I think the range from the vitamin shoppe was $23.00 - $36.00 for the bottles respectively.